CN107541578A - A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation - Google Patents
A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation Download PDFInfo
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- CN107541578A CN107541578A CN201610465939.4A CN201610465939A CN107541578A CN 107541578 A CN107541578 A CN 107541578A CN 201610465939 A CN201610465939 A CN 201610465939A CN 107541578 A CN107541578 A CN 107541578A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation, belongs to casting technology field, is related to a kind of nodular cast iron, more particularly to a kind of manufacture method of the high-wearing feature nodular cast iron for wind-power electricity generation.Instant component is novel, manufacturing process is rationally clear, the present invention is using spheroidal graphite cast-iron as main component, according to the present invention, by forming above-mentioned composition, can with low cost manufacture elevated temperature strength and oxidative resistance excellent and with excellent ductility spheroidal graphite cast-iron, reduce the production cost of enterprise, production efficiency, and the wearability of cast iron are improved, is effectively improved the service life of cast iron.
Description
Technical field
The invention belongs to casting technology field, is related to a kind of nodular cast iron, more particularly to a kind of manufacture method of the high-wearing feature nodular cast iron for wind-power electricity generation.
Background technology
The general name for the alloy that cast iron is mainly made up of iron, carbon and silicon.Cast iron can be divided into：Grey cast-iron, white cast-iron, malleable cast iron, nodular cast iron, vermicular cast iron and alloy cast iron.
The fast development of wind power generation industry, it is increasing to the demand of low-temperature impact property spheroidal graphite cast-iron.According to current growth trend, by 2020, Chinese total installation of generating capacity was up to 100,000,000 KW, it is seen that wind power industry is in the ascendant.Spheroidal graphite cast-iron is the main member of sharp generating equipment, and because wind power plant is built in the windy cryogenically band such as seashore and desert more, in long-term exposed air, corrosion is more serious, and service life greatly shortens, therefore higher to spheroidal graphite cast-iron quality requirement, iing is required that spheroidal graphite cast-iron has outside conventional performance index, it is low temperature resistant also to require that it has, corrosion resistant performance, to improve the safety coefficient of wind power product and service life.At present, existing nodular cast iron is only capable of meeting there is good performance at a temperature of subzero 40 DEG C or so, and at a temperature of subzero 60 DEG C or so, conventional performance index is relatively low, impact flexibility is 6~8J/cm2, poor impact toughness, safety coefficient is low, and decay resistance is poor, service life is short, it is impossible to meet requirement of the wind power plant under condition of ultralow temperature to nodular iron casting, therefore to low temperature performance excellent, the research of the spheroidal graphite cast-iron of good corrosion resistance is very necessary.
The content of the invention
The present invention is in order to solve traditional nodular cast iron part as tensile strength raises, elongation declines the deficiencies such as very fast, wearability is low, a kind of manufacture method of the high-wearing feature nodular cast iron for wind-power electricity generation is provided, under conditions of extra manufacturing procedure and processing cost is not increased, higher low temperature resistant and high-wear resistance is obtained, the use of high request occasion can be met.
The technical scheme is that：The manufacture method of a kind of high-wearing feature nodular cast iron for wind-power electricity generation, it is characterised in that comprise the following steps：
(1) melting iron liquid：It is first 60~80 and 20~40 by the mass fraction of the Q10 pig iron and steel scrap, weighs the Q10 pig iron and steel scrap；
(2) it is 6 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodular cast iron carburant again：100, it is 3 by quality and the Q10 pig iron of nickel plate and the ratio between the gross mass of steel scrap：100；
(3) nodular cast iron carburant and nickel plate are weighed, is then added to the Q10 pig iron, steel scrap, the nodular cast iron that weigh in intermediate frequency furnace with carburant and nickel plate, temperature is warming up to as 1500~1550 DEG C, stands 2~4min, come out of the stove, obtain iron liquid；
(4) nodularization and inoculation：It is 2 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodulizer first：100；
(5) it is 1 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of silicon titanate innoculant again：100th, the ratio between the quality of silicon bismuth inovulant and the gross mass of the Q10 pig iron and steel scrap are 0.5：100；
(6) nodulizer, silicon titanate innoculant and silicon bismuth inovulant are weighed, then the nodulizer weighed is put in the dykes and dams side of pouring ladle, by the silicon titanate innoculant uniform fold weighed on nodulizer,
(7) again by the iron liquid of step (3) under conditions of pouring temperature is 1310~1350 DEG C, it is poured into bag, the silicon bismuth inovulant weighed is added in casting process with stream, under conditions of temperature is 1420~1450 DEG C, 0.4~0.6min of insulation completes nodularization and bred, a kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before being heat-treated；
(8) it is heat-treated：A kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before the heat treatment that will be obtained in step (7), which is fitted into heat-treatment furnace, carries out graphitizing annealing, and the process of wherein graphitizing annealing is：
(A) furnace temperature is first warming up to temperature as 920~940 DEG C, is incubated 2~3h,
(B) and then temperature to be furnace-cooled to is 730~750 DEG C, is incubated 2~3h,
(C) when it is 600 DEG C to be furnace-cooled to temperature, air cooling of coming out of the stove, heat treatment is completed, obtains low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron.
Beneficial effects of the present invention are：A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation proposed by the present invention, component is novel, manufacturing process is rationally clear, and the present invention is using spheroidal graphite cast-iron as main component, according to the present invention, by forming above-mentioned composition, can with low cost manufacture elevated temperature strength and oxidative resistance it is excellent and with excellent ductility spheroidal graphite cast-iron, reduce the production cost of enterprise, improve production efficiency, and the wearability of cast iron, it is effectively improved the service life of cast iron.
Embodiment
The invention will be further described below：
A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation, comprises the following steps：
(1) melting iron liquid：It is first 60~80 and 20~40 by the mass fraction of the Q10 pig iron and steel scrap, weighs the Q10 pig iron and steel scrap；
(2) it is 6 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodular cast iron carburant again：100, it is 3 by quality and the Q10 pig iron of nickel plate and the ratio between the gross mass of steel scrap：100；
(3) nodular cast iron carburant and nickel plate are weighed, is then added to the Q10 pig iron, steel scrap, the nodular cast iron that weigh in intermediate frequency furnace with carburant and nickel plate, temperature is warming up to as 1500~1550 DEG C, stands 2~4min, come out of the stove, obtain iron liquid；
(4) nodularization and inoculation：It is 2 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodulizer first：100；
(5) it is 1 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of silicon titanate innoculant again：100th, the ratio between the quality of silicon bismuth inovulant and the gross mass of the Q10 pig iron and steel scrap are 0.5：100；
(6) nodulizer, silicon titanate innoculant and silicon bismuth inovulant are weighed, then the nodulizer weighed is put in the dykes and dams side of pouring ladle, by the silicon titanate innoculant uniform fold weighed on nodulizer,
(7) again by the iron liquid of step (3) under conditions of pouring temperature is 1310~1350 DEG C, it is poured into bag, the silicon bismuth inovulant weighed is added in casting process with stream, under conditions of temperature is 1420~1450 DEG C, 0.4~0.6min of insulation completes nodularization and bred, a kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before being heat-treated；
(8) it is heat-treated：A kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before the heat treatment that will be obtained in step (7), which is fitted into heat-treatment furnace, carries out graphitizing annealing, and the process of wherein graphitizing annealing is：
(A) furnace temperature is first warming up to temperature as 920~940 DEG C, is incubated 2~3h,
(B) and then temperature to be furnace-cooled to is 730~750 DEG C, is incubated 2~3h,
(C) when it is 600 DEG C to be furnace-cooled to temperature, air cooling of coming out of the stove, heat treatment is completed, obtains low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron.
Instant component is novel, manufacturing process is rationally clear, the present invention is using spheroidal graphite cast-iron as main component, according to the present invention, by forming above-mentioned composition, can with low cost manufacture elevated temperature strength and oxidative resistance excellent and with excellent ductility spheroidal graphite cast-iron, reduce the production cost of enterprise, production efficiency, and the wearability of cast iron are improved, is effectively improved the service life of cast iron.
Claims (1)
1. the manufacture method of a kind of high-wearing feature nodular cast iron for wind-power electricity generation, it is characterised in that comprise the following steps：
(1) melting iron liquid：It is first 60~80 and 20~40 by the mass fraction of the Q10 pig iron and steel scrap, weighs the Q10 pig iron and steel scrap；
(2) it is 6 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodular cast iron carburant again：100, it is 3 by quality and the Q10 pig iron of nickel plate and the ratio between the gross mass of steel scrap：100；
(3) nodular cast iron carburant and nickel plate are weighed, is then added to the Q10 pig iron, steel scrap, the nodular cast iron that weigh in intermediate frequency furnace with carburant and nickel plate, temperature is warming up to as 1500~1550 DEG C, stands 2~4min, come out of the stove, obtain iron liquid；
(4) nodularization and inoculation：It is 2 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of nodulizer first：100；
(5) it is 1 to press the ratio between quality and gross mass of the Q10 pig iron and steel scrap of silicon titanate innoculant again：100th, the ratio between the quality of silicon bismuth inovulant and the gross mass of the Q10 pig iron and steel scrap are 0.5：100；
(6) nodulizer, silicon titanate innoculant and silicon bismuth inovulant are weighed, then the nodulizer weighed is put in the dykes and dams side of pouring ladle, by the silicon titanate innoculant uniform fold weighed on nodulizer,
(7) again by the iron liquid of step (3) under conditions of pouring temperature is 1310~1350 DEG C, it is poured into bag, the silicon bismuth inovulant weighed is added in casting process with stream, under conditions of temperature is 1420~1450 DEG C, 0.4~0.6min of insulation completes nodularization and bred, a kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before being heat-treated；
(8) it is heat-treated：A kind of low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron before the heat treatment that will be obtained in step (7), which is fitted into heat-treatment furnace, carries out graphitizing annealing, and the process of wherein graphitizing annealing is：
(A) furnace temperature is first warming up to temperature as 920~940 DEG C, is incubated 2~3h,
(B) and then temperature to be furnace-cooled to is 730~750 DEG C, is incubated 2~3h,
(C) when it is 600 DEG C to be furnace-cooled to temperature, air cooling of coming out of the stove, heat treatment is completed, obtains low-temperature-resicorrosion-resistant corrosion-resistant wind-power spherulitic graphite cast iron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610465939.4A CN107541578A (en) | 2016-06-24 | 2016-06-24 | A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation |
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| CN201610465939.4A CN107541578A (en) | 2016-06-24 | 2016-06-24 | A kind of manufacture method of high-wearing feature nodular cast iron for wind-power electricity generation |
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| CN107541578A true CN107541578A (en) | 2018-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723581A (en) * | 2017-08-23 | 2018-02-23 | 宁波市恒源铸造有限公司 | Corrosion resistant ductile iron and its casting method |
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- 2016-06-24 CN CN201610465939.4A patent/CN107541578A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107723581A (en) * | 2017-08-23 | 2018-02-23 | 宁波市恒源铸造有限公司 | Corrosion resistant ductile iron and its casting method |
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